Auto neutral mode ? and rad or bumper removal - Page 2

JohnDotCom · 29th December 2006, 11:53

Yes Grey Ghost, only passing on info posted but I know the Diesel Info was inaccurate and never happened and was removed from later handbooks, I didn't know about Petrol, do now. What ever happened to Proof Readers?

GreyGhost · 29th December 2006, 12:04

Quote:

Originally Posted by JohnDotCom

Yes Grey Ghost, only passing on info posted but I know the Diesel Info was inaccurate and never happened and was removed from later handbooks, I didn't know about Petrol, do now. What ever happened to Proof Readers?

I and many others voiced the argument that petrols did not do this over on the dark side, as usual those that shout loudest get heard or is that herd

Accurate info only on this forum. Confusing members is not on the agenda.

JohnDotCom · 29th December 2006, 12:21

Pity we can't get corrections when there is incorrect information posted, it hurts everyone but as you say over here we will try better & harder. As I said what ever happened to Proof Readers to put wrong info in Rover Handbooks to begin with. Now corrected here and no misleading was intended, my post was accurate about the diesel Question, but I had to look up Petrol info and as you say this was incorrect.

Matt brighton · 29th December 2006, 12:35

Hi Apywell.

To answer your question - mine has never stalled or shown any sign of doing so at lights (unlike british designed motorcycles which have been designed to stall at Green!).

I do sometimes notice a very very slight fluctuation on the idle rpm - when cold it's usually noticable/ but not at all times tho - I have put some injector cleaner in now and again which I think has helped.

Regards

Matt - brighton

M47Rman · 29th December 2006, 13:51

I fear I am about to kick this one off all over again. The feature that has been talked about we called 'idle neutral'. This system was designed to select neutral, internally within the gearbox, when the vehicle was stationary, for example at traffic lights. There is no movement of the gear selector, and no obvious change to the driver, apart from the aforementioned minor engine speed change. As far as I am aware this feature ws only used on the DIESEL vehicles, and there were initialy lots of problems with it. As such I am not sure if the feature actually made it into production, although until this discussion started I had assumed that it did. I seem to recall that one of the reasons for introducing it, was to eke out every last bit of fuel economy on the emissions homologation. You would be surprised at the 'competition' there is/was between the manufacturers to beat each others published fuel con figures - however misleading or otherwise they may be! You would be equally surprised at the lengths said manufacturers go to, to achieve the highest possible figures.
Land Rover for example spent weeks tweaking the tune of the TD5 engine just to ensure a combined fuel con figure of 30mpg was achieved!
As such even the small mpg improvement that the idle neutral facility gave would have been significant.
I will try and get in touch with an old friend who worked on the Jatco box, and see if he can shed any more light!:lol:
Andy

DeeCee · 29th December 2006, 14:26

Never noticed the neutral effect on my 2004 CDTi Auto.
When stationary in Drive with the footbrake on, any easing of the brake pedal causes the car to roll.
...Would guess it does not select neutral.

However I have noticed the Hill Descent mode operating.
Can usually make it change down by braking on downhill run, then easing brake pedal pressure to allow the car to increase road speed, it will usually change down, you can clearly see this by a increase in RPM and a reduction in road speed.

My previous car was a Honda Legend Auto which was supposed to have a Hill Descent mode, but never seemed to work.
When I first changed to my R75 the Hill descent mode operation was very noticeable.

Alex30013k · 29th December 2006, 15:18

Just like to add that I wanted to remove my rad after a leak and it was imposable with out removing the front bumper!

Because you cant get too quite a few screws!

apywell · 29th December 2006, 18:29

Quote:

However I have noticed the Hill Descent mode operating.
Can usually make it change down by braking on downhill run, then easing brake pedal pressure to allow the car to increase road speed, it will usually change down, you can clearly see this by a increase in RPM and a reduction in road speed.

I know there has some debait before about the engine breaking while going downhill, and I notice mine changes gear while going downhill if I use the break a little.

M47Rman · 29th December 2006, 18:38

Quote:

Originally Posted by apywell

I know there has some debait before about the engine breaking while going downhill, and I notice mine changes gear while going downhill if I use the break a little.

Mine too. It did it several times during my drive along the A55 over Christmas.
In fact I was impressed at how well it worked. My previous automatic Discovery would happily run away with itself down the same hills!
Andy

Keith · 29th December 2006, 18:52

According to manuel

"Hill descent mode
Unless some form of braking is applied, vehicles will
naturally increase speed while travelling down hill. On
most automatic vehicles, this results in the highest gear
being selected, thereby reducing engine braking to a
minimum.
On Rover 75 however, the hill descent mode provides
engine braking by causing the transmission to
automatically change to a lower gear on steep downhill
gradients, provided the following criteria occur:

· Road speed exceeds 19 mph (30 km/h).
· Foot brake is applied for at least one second.
· Accelerator pedal is fully released.

NOTE: Hill descent mode is cancelled when the throttle is reapplied.

Cruise control mode
When cruise control (if fitted) is activated, a suitable gear
change pattern is selected which is less sensitive to throttle
changes. This reduces the amount and frequency of gear
changes, providing a smoother ride."

Clever things these Jatco boxes aren't they!

29th December 2006, 12:35	#14
Matt brighton Avid contributor Alfa Romeo 159 !! Join Date: Dec 2006 Location: Brighton Posts: 175 Thanks: 0 Thanked 0 Times in 0 Posts	Hi Apywell. To answer your question - mine has never stalled or shown any sign of doing so at lights (unlike british designed motorcycles which have been designed to stall at Green!). I do sometimes notice a very very slight fluctuation on the idle rpm - when cold it's usually noticable/ but not at all times tho - I have put some injector cleaner in now and again which I think has helped. Regards Matt - brighton __________________ [SIGPIC][/SIGPIC]

29th December 2006, 13:51	#15
M47Rman Avid contributor 2001 Rover 75 saloon 2.5 KV6 Conn SE Automatic Join Date: Nov 2006 Location: Peterborough Posts: 186 Thanks: 0 Thanked 0 Times in 0 Posts	I fear I am about to kick this one off all over again. The feature that has been talked about we called 'idle neutral'. This system was designed to select neutral, internally within the gearbox, when the vehicle was stationary, for example at traffic lights. There is no movement of the gear selector, and no obvious change to the driver, apart from the aforementioned minor engine speed change. As far as I am aware this feature ws only used on the DIESEL vehicles, and there were initialy lots of problems with it. As such I am not sure if the feature actually made it into production, although until this discussion started I had assumed that it did. I seem to recall that one of the reasons for introducing it, was to eke out every last bit of fuel economy on the emissions homologation. You would be surprised at the 'competition' there is/was between the manufacturers to beat each others published fuel con figures - however misleading or otherwise they may be! You would be equally surprised at the lengths said manufacturers go to, to achieve the highest possible figures. Land Rover for example spent weeks tweaking the tune of the TD5 engine just to ensure a combined fuel con figure of 30mpg was achieved! As such even the small mpg improvement that the idle neutral facility gave would have been significant. I will try and get in touch with an old friend who worked on the Jatco box, and see if he can shed any more light!:lol: Andy __________________ [SIGPIC][/SIGPIC]

29th December 2006, 11:53	#11
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Yes Grey Ghost, only passing on info posted but I know the Diesel Info was inaccurate and never happened and was removed from later handbooks, I didn't know about Petrol, do now. What ever happened to Proof Readers?

29th December 2006, 12:21	#13
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Pity we can't get corrections when there is incorrect information posted, it hurts everyone but as you say over here we will try better & harder. As I said what ever happened to Proof Readers to put wrong info in Rover Handbooks to begin with. Now corrected here and no misleading was intended, my post was accurate about the diesel Question, but I had to look up Petrol info and as you say this was incorrect.

29th December 2006, 14:26	#16
DeeCee Regular poster none Join Date: Nov 2006 Location: none Posts: 93 Thanks: 0 Thanked 0 Times in 0 Posts	Never noticed the neutral effect on my 2004 CDTi Auto. When stationary in Drive with the footbrake on, any easing of the brake pedal causes the car to roll. ...Would guess it does not select neutral. However I have noticed the Hill Descent mode operating. Can usually make it change down by braking on downhill run, then easing brake pedal pressure to allow the car to increase road speed, it will usually change down, you can clearly see this by a increase in RPM and a reduction in road speed. My previous car was a Honda Legend Auto which was supposed to have a Hill Descent mode, but never seemed to work. When I first changed to my R75 the Hill descent mode operation was very noticeable.

29th December 2006, 15:18	#17
Alex30013k Posted a thing or two Rover 75 Saloon 2.0 CDTi Conn Se Join Date: Nov 2006 Location: Ashford Kent Posts: 1,560 Thanks: 17 Thanked 29 Times in 21 Posts	Just like to add that I wanted to remove my rad after a leak and it was imposable with out removing the front bumper! Because you cant get too quite a few screws!

29th December 2006, 18:52	#20
Keith This is my second home ZT400 Join Date: Oct 2006 Location: Ellesmere Posts: 5,948 Thanks: 0 Thanked 43 Times in 29 Posts	According to manuel "Hill descent mode Unless some form of braking is applied, vehicles will naturally increase speed while travelling down hill. On most automatic vehicles, this results in the highest gear being selected, thereby reducing engine braking to a minimum. On Rover 75 however, the hill descent mode provides engine braking by causing the transmission to automatically change to a lower gear on steep downhill gradients, provided the following criteria occur: · Road speed exceeds 19 mph (30 km/h). · Foot brake is applied for at least one second. · Accelerator pedal is fully released. NOTE: Hill descent mode is cancelled when the throttle is reapplied. Cruise control mode When cruise control (if fitted) is activated, a suitable gear change pattern is selected which is less sensitive to throttle changes. This reduces the amount and frequency of gear changes, providing a smoother ride." Clever things these Jatco boxes aren't they!